import Mock from 'mockjs'
import { getEnvValue } from '@/utils/index'
import login from './login'

const mocks = [...login]
// for front mock
// please use it cautiously, it will redefine XMLHttpRequest,
// which will cause many of your third-party libraries to be invalidated(like progress event).
function mockXHR () {
  // mock patch
  // https://github.com/nuysoft/Mock/issues/300
  Mock.XHR.prototype.proxy_send = Mock.XHR.prototype.send
  Mock.XHR.prototype.send = function () {
    if (this.custom.xhr) {
      this.custom.xhr.withCredentials = this.withCredentials || false

      if (this.responseType) {
        this.custom.xhr.responseType = this.responseType
      }
    }
    this.proxy_send(...arguments)
  }

  function XHR2ExpressReqWrap (respond) {
    return function (options) {
      let result = null
      if (respond instanceof Function) {
        const { body, type, url } = options
        // https://expressjs.com/en/4x/api.html#req
        result = respond({
          method: type,
          body: JSON.parse(body),
          query: url
        })
      } else {
        result = respond
      }
      return Mock.mock(result)
    }
  }

  for (const i of mocks) {
    Mock.mock(
      new RegExp(i.url),
      i.type || 'get',
      XHR2ExpressReqWrap(i.response)
    )
  }
}

export function initMockServer () {
  const NEED_MOCK = getEnvValue('VITE_APP_NEED_MOCK')
  if (NEED_MOCK === 'true') {
    mockXHR()
  }
}
